Hello and Welcome to CC, LJ84...
That depends entirely on the language with which you are familiar. Most reasonably-educated English speakers today would find the NIV easiest to interpret, because it is written in modern English with an emphasis on capturing the meaning of the original language without being wedded to the order of words. The NASB is a more formal translation, but is more difficult to read. I'm not as familiar with the other modern translations, though I know the Amplified Bible gives a broader range of meaning within the text, while the Message is a much looser paraphrase. Unless you are familiar with Elizabethan English, you might find the KJV a bit difficult because many of the words are no longer used in everyday English, and some have changed meaning considerably.
It also depends on what you mean by "interpret". If you mean for everyday reading (especially aloud) and basic study, the notes above would be appropriate. If you mean digging deep into the text and getting as much as you can from it, I would recommend a formal translation such as the NASB, and better yet, the original languages.